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38228560 = 245477857
BaseRepresentation
bin1001000111010…
…1001001010000
32122221012201121
42101311021100
534241303220
63443212024
7642636346
oct221651120
978835647
1038228560
111a640757
1210977014
137bc6466
145111996
153551eaa
hex2475250

38228560 has 20 divisors (see below), whose sum is σ = 88881588. Its totient is φ = 15291392.

The previous prime is 38228557. The next prime is 38228569. The reversal of 38228560 is 6582283.

It can be written as a sum of positive squares in 2 ways, for example, as 27962944 + 10265616 = 5288^2 + 3204^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×382285602 = 2922845599347200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38228569) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 238849 + ... + 239008.

Almost surely, 238228560 is an apocalyptic number.

It is an amenable number.

38228560 is an abundant number, since it is smaller than the sum of its proper divisors (50653028).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

38228560 is a wasteful number, since it uses less digits than its factorization.

38228560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477870 (or 477864 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 38228560 is about 6182.9248741999. The cubic root of 38228560 is about 336.8702403514.

The spelling of 38228560 in words is "thirty-eight million, two hundred twenty-eight thousand, five hundred sixty".

Divisors: 1 2 4 5 8 10 16 20 40 80 477857 955714 1911428 2389285 3822856 4778570 7645712 9557140 19114280 38228560